4 files changed, 0 insertions, 30 deletions
diff --git a/lib/arel/extensions/array.rb b/lib/arel/extensions/array.rb
index 793c06aad8..5b6d6d6abd 100644
--- a/lib/arel/extensions/array.rb
+++ b/lib/arel/extensions/array.rb
@@ -2,12 +2,4 @@ class Array
   def to_hash
     Hash[*flatten]
   end
-  
-  def to_sql(formatter = nil)
-    "(" + collect { |e| e.to_sql(formatter) }.join(', ') + ")"
-  end
-  
-  def inclusion_predicate_sql
-    "IN"
-  end
 end
 \ No newline at end of file
diff --git a/lib/arel/extensions/nil_class.rb b/lib/arel/extensions/nil_class.rb
deleted file mode 100644
index 729c4cada7..0000000000
--- a/lib/arel/extensions/nil_class.rb
+++ /dev/null
@@ -1,5 +0,0 @@
-class NilClass
-  def equality_predicate_sql
-    'IS'
-  end
-end
-\ No newline at end of file
diff --git a/lib/arel/extensions/object.rb b/lib/arel/extensions/object.rb
index 14e2f82ce5..d626407dcb 100644
--- a/lib/arel/extensions/object.rb
+++ b/lib/arel/extensions/object.rb
@@ -7,14 +7,6 @@ class Object
     bind(relation)
   end
 
-  def to_sql(formatter)
-    formatter.scalar self
-  end
-
-  def equality_predicate_sql
-    '='
-  end
-
   def metaclass
     class << self
       self
diff --git a/lib/arel/extensions/range.rb b/lib/arel/extensions/range.rb
deleted file mode 100644
index d7329efe34..0000000000
--- a/lib/arel/extensions/range.rb
+++ /dev/null
@@ -1,9 +0,0 @@
-class Range
-  def to_sql(formatter = nil)
-    formatter.range self.begin, self.end
-  end
-  
-  def inclusion_predicate_sql
-    "BETWEEN"
-  end
-end
-\ No newline at end of file